minetest.git - modified minetest for gpcfs purposes

	Commit message (Expand)	Author	Age
*	Revert part of eb49009d023e6e3b5d59a97b8fb5fed5eee83296 (#5230)	Auke Kok	2017-02-16
*	Compress textures and fonts	Maksim Gamarnik	2015-10-15
*	Implement proper font handling	sapier	2014-11-30

/* Minetest-c55 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef NOISE_HEADER #define NOISE_HEADER #include "debug.h" class PseudoRandom { public: PseudoRandom(): m_next(0) { } PseudoRandom(int seed): m_next(seed) { } void seed(int seed) { m_next = seed; } // Returns 0...32767 int next() { m_next = m_next * 1103515245 + 12345; return((unsigned)(m_next/65536) % 32768); } int range(int min, int max) { if(max-min > 32768/10) { //dstream<<"WARNING: PseudoRandom::range: max > 32767"<<std::endl; assert(0); } if(min > max) { assert(0); return max; } return (next()%(max-min+1))+min; } private: int m_next; }; double easeCurve(double t); // Return value: -1 ... 1 double noise2d(int x, int y, int seed); double noise3d(int x, int y, int z, int seed); double noise2d_gradient(double x, double y, int seed); double noise3d_gradient(double x, double y, double z, int seed); double noise2d_perlin(double x, double y, int seed, int octaves, double persistence); double noise2d_perlin_abs(double x, double y, int seed, int octaves, double persistence); double noise3d_perlin(double x, double y, double z, int seed, int octaves, double persistence); double noise3d_perlin_abs(double x, double y, double z, int seed, int octaves, double persistence); enum NoiseType { NOISE_CONSTANT_ONE, NOISE_PERLIN, NOISE_PERLIN_ABS, NOISE_PERLIN_CONTOUR, NOISE_PERLIN_CONTOUR_FLIP_YZ, }; struct NoiseParams { NoiseType type; int seed; int octaves; double persistence; double pos_scale; double noise_scale; // Useful for contour noises NoiseParams(NoiseType type_=NOISE_PERLIN, int seed_=0, int octaves_=3, double persistence_=0.5, double pos_scale_=100.0, double noise_scale_=1.0): type(type_), seed(seed_), octaves(octaves_), persistence(persistence_), pos_scale(pos_scale_), noise_scale(noise_scale_) { } }; double noise3d_param(const NoiseParams &param, double x, double y, double z); class NoiseBuffer { public: NoiseBuffer(); ~NoiseBuffer(); void clear(); void create(const NoiseParams &param, double first_x, double first_y, double first_z, double last_x, double last_y, double last_z, double samplelength_x, double samplelength_y, double samplelength_z); void multiply(const NoiseParams &param); // Deprecated void create(int seed, int octaves, double persistence, bool abs, double first_x, double first_y, double first_z, double last_x, double last_y, double last_z, double samplelength_x, double samplelength_y, double samplelength_z); void intSet(int x, int y, int z, double d); void intMultiply(int x, int y, int z, double d); double intGet(int x, int y, int z); double get(double x, double y, double z); //bool contains(double x, double y, double z); private: double *m_data; double m_start_x, m_start_y, m_start_z; double m_samplelength_x, m_samplelength_y, m_samplelength_z; int m_size_x, m_size_y, m_size_z; }; #endif